We recommend a local doctor's office specializing in pain management to our patients. You can find a link here: Doctor's Recommendations - Medical Marijuana Card | Evaluation | Colorado

Definitely not going to be the cheapest, but beware, 3,200 patients are currently waiting for the board of Health to make a decision about what to do with recommendations that were allegedly photocopied with the doctor's signature by a physicians assistant. This was done at the 'cheapest' doctor for mmj in the city.

You could probably find a reputable place for less than the one I recommend above, but just beware, you don't want to find out that you won't get your license for months because of something going on with the doctor you visit.